/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.provider;

import java.util.HashSet;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import android.annotation.SuppressLint;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.telephony.SmsMessage;
import android.text.TextUtils;
import android.text.util.Regex;
import android.util.Config;
import android.util.Log;

import com.google.android.mms.util.SqliteWrapper;

/**
 * The Telephony provider contains data related to phone operation.
 * 
 * @hide
 */
@SuppressLint("NewApi")
public final class Telephony {
	private static final String TAG = "Telephony";
	private static final boolean DEBUG = true;
	private static final boolean LOCAL_LOGV = DEBUG ? Config.LOGD : Config.LOGV;

	// Constructor
	public Telephony() {
	}

	/**
	 * Base columns for tables that contain text based SMSs.
	 */
	public interface TextBasedSmsColumns {
		/**
		 * The type of the message
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String TYPE = "type";

		public static final int MESSAGE_TYPE_ALL = 0;
		public static final int MESSAGE_TYPE_INBOX = 1;
		public static final int MESSAGE_TYPE_SENT = 2;
		public static final int MESSAGE_TYPE_DRAFT = 3;
		public static final int MESSAGE_TYPE_OUTBOX = 4;
		public static final int MESSAGE_TYPE_FAILED = 5; // for failed outgoing
															// messages
		public static final int MESSAGE_TYPE_QUEUED = 6; // for messages to send
															// later

		/**
		 * The thread ID of the message
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String THREAD_ID = "thread_id";

		/**
		 * The address of the other party
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String ADDRESS = "address";

		/**
		 * The person ID of the sender
		 * <P>
		 * Type: INTEGER (long)
		 * </P>
		 */
		public static final String PERSON_ID = "person";

		/**
		 * The date the message was sent
		 * <P>
		 * Type: INTEGER (long)
		 * </P>
		 */
		public static final String DATE = "date";

		/**
		 * Has the message been read
		 * <P>
		 * Type: INTEGER (boolean)
		 * </P>
		 */
		public static final String READ = "read";

		/**
		 * The TP-Status value for the message, or -1 if no status has been
		 * received
		 */
		public static final String STATUS = "status";

		public static final int STATUS_NONE = -1;
		public static final int STATUS_COMPLETE = 0;
		public static final int STATUS_PENDING = 64;
		public static final int STATUS_FAILED = 128;

		/**
		 * The subject of the message, if present
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String SUBJECT = "subject";

		/**
		 * The body of the message
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String BODY = "body";

		/**
		 * The id of the sender of the conversation, if present
		 * <P>
		 * Type: INTEGER (reference to item in content://contacts/people)
		 * </P>
		 */
		public static final String PERSON = "person";

		/**
		 * The protocol identifier code
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String PROTOCOL = "protocol";

		/**
		 * Whether the <code>TP-Reply-Path</code> bit was set on this message
		 * <P>
		 * Type: BOOLEAN
		 * </P>
		 */
		public static final String REPLY_PATH_PRESENT = "reply_path_present";

		/**
		 * The service center (SC) through which to send the message, if present
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String SERVICE_CENTER = "service_center";

		/**
		 * Has the message been locked?
		 * <P>
		 * Type: INTEGER (boolean)
		 * </P>
		 */
		public static final String LOCKED = "locked";
	}

	/**
	 * Contains all text based SMS messages.
	 */
	public static final class Sms implements BaseColumns, TextBasedSmsColumns {
		public static final Cursor query(ContentResolver cr, String[] projection) {
			return cr.query(CONTENT_URI, projection, null, null, DEFAULT_SORT_ORDER);
		}

		public static final Cursor query(ContentResolver cr, String[] projection, String where, String orderBy) {
			return cr.query(CONTENT_URI, projection, where, null, orderBy == null ? DEFAULT_SORT_ORDER : orderBy);
		}

		/**
		 * The content:// style URL for this table
		 */
		public static final Uri CONTENT_URI = Uri.parse("content://sms");

		/**
		 * The default sort order for this table
		 */
		public static final String DEFAULT_SORT_ORDER = "date DESC";

		/**
		 * Add an SMS to the given URI.
		 * 
		 * @param resolver
		 *            the content resolver to use
		 * @param uri
		 *            the URI to add the message to
		 * @param address
		 *            the address of the sender
		 * @param body
		 *            the body of the message
		 * @param subject
		 *            the psuedo-subject of the message
		 * @param date
		 *            the timestamp for the message
		 * @param read
		 *            true if the message has been read, false if not
		 * @param deliveryReport
		 *            true if a delivery report was requested, false if not
		 * @return the URI for the new message
		 */
		public static Uri addMessageToUri(ContentResolver resolver, Uri uri, String address, String body,
				String subject, Long date, boolean read, boolean deliveryReport) {
			return addMessageToUri(resolver, uri, address, body, subject, date, read, deliveryReport, -1L);
		}

		/**
		 * Add an SMS to the given URI with thread_id specified.
		 * 
		 * @param resolver
		 *            the content resolver to use
		 * @param uri
		 *            the URI to add the message to
		 * @param address
		 *            the address of the sender
		 * @param body
		 *            the body of the message
		 * @param subject
		 *            the psuedo-subject of the message
		 * @param date
		 *            the timestamp for the message
		 * @param read
		 *            true if the message has been read, false if not
		 * @param deliveryReport
		 *            true if a delivery report was requested, false if not
		 * @param threadId
		 *            the thread_id of the message
		 * @return the URI for the new message
		 */
		public static Uri addMessageToUri(ContentResolver resolver, Uri uri, String address, String body,
				String subject, Long date, boolean read, boolean deliveryReport, long threadId) {
			ContentValues values = new ContentValues(7);

			values.put(ADDRESS, address);
			if (date != null) {
				values.put(DATE, date);
			}
			values.put(READ, read ? Integer.valueOf(1) : Integer.valueOf(0));
			values.put(SUBJECT, subject);
			values.put(BODY, body);
			if (deliveryReport) {
				values.put(STATUS, STATUS_PENDING);
			}
			if (threadId != -1L) {
				values.put(THREAD_ID, threadId);
			}
			return resolver.insert(uri, values);
		}

		/**
		 * Move a message to the given folder.
		 * 
		 * @param context
		 *            the context to use
		 * @param uri
		 *            the message to move
		 * @param folder
		 *            the folder to move to
		 * @return true if the operation succeeded
		 */
		public static boolean moveMessageToFolder(Context context, Uri uri, int folder) {
			if (uri == null) {
				return false;
			}

			boolean markAsUnread = false;
			boolean markAsRead = false;
			switch (folder) {
			case MESSAGE_TYPE_INBOX:
			case MESSAGE_TYPE_DRAFT:
				break;
			case MESSAGE_TYPE_OUTBOX:
			case MESSAGE_TYPE_SENT:
				markAsRead = true;
				break;
			case MESSAGE_TYPE_FAILED:
			case MESSAGE_TYPE_QUEUED:
				markAsUnread = true;
				break;
			default:
				return false;
			}

			ContentValues values = new ContentValues(2);

			values.put(TYPE, folder);
			if (markAsUnread) {
				values.put(READ, Integer.valueOf(0));
			} else if (markAsRead) {
				values.put(READ, Integer.valueOf(1));
			}

			return 1 == SqliteWrapper.update(context, context.getContentResolver(), uri, values, null, null);
		}

		/**
		 * Returns true iff the folder (message type) identifies an outgoing
		 * message.
		 */
		public static boolean isOutgoingFolder(int messageType) {
			return (messageType == MESSAGE_TYPE_FAILED) || (messageType == MESSAGE_TYPE_OUTBOX)
					|| (messageType == MESSAGE_TYPE_SENT) || (messageType == MESSAGE_TYPE_QUEUED);
		}

		/**
		 * Contains all text based SMS messages in the SMS app's inbox.
		 */
		public static final class Inbox implements BaseColumns, TextBasedSmsColumns {
			/**
			 * The content:// style URL for this table
			 */
			public static final Uri CONTENT_URI = Uri.parse("content://sms/inbox");

			/**
			 * The default sort order for this table
			 */
			public static final String DEFAULT_SORT_ORDER = "date DESC";

			/**
			 * Add an SMS to the Draft box.
			 * 
			 * @param resolver
			 *            the content resolver to use
			 * @param address
			 *            the address of the sender
			 * @param body
			 *            the body of the message
			 * @param subject
			 *            the psuedo-subject of the message
			 * @param date
			 *            the timestamp for the message
			 * @param read
			 *            true if the message has been read, false if not
			 * @return the URI for the new message
			 */
			public static Uri addMessage(ContentResolver resolver, String address, String body, String subject,
					Long date, boolean read) {
				return addMessageToUri(resolver, CONTENT_URI, address, body, subject, date, read, false);
			}
		}

		/**
		 * Contains all sent text based SMS messages in the SMS app's.
		 */
		public static final class Sent implements BaseColumns, TextBasedSmsColumns {
			/**
			 * The content:// style URL for this table
			 */
			public static final Uri CONTENT_URI = Uri.parse("content://sms/sent");

			/**
			 * The default sort order for this table
			 */
			public static final String DEFAULT_SORT_ORDER = "date DESC";

			/**
			 * Add an SMS to the Draft box.
			 * 
			 * @param resolver
			 *            the content resolver to use
			 * @param address
			 *            the address of the sender
			 * @param body
			 *            the body of the message
			 * @param subject
			 *            the psuedo-subject of the message
			 * @param date
			 *            the timestamp for the message
			 * @return the URI for the new message
			 */
			public static Uri addMessage(ContentResolver resolver, String address, String body, String subject,
					Long date) {
				return addMessageToUri(resolver, CONTENT_URI, address, body, subject, date, true, false);
			}
		}

		/**
		 * Contains all sent text based SMS messages in the SMS app's.
		 */
		public static final class Draft implements BaseColumns, TextBasedSmsColumns {
			/**
			 * The content:// style URL for this table
			 */
			public static final Uri CONTENT_URI = Uri.parse("content://sms/draft");

			/**
			 * The default sort order for this table
			 */
			public static final String DEFAULT_SORT_ORDER = "date DESC";

			/**
			 * Add an SMS to the Draft box.
			 * 
			 * @param resolver
			 *            the content resolver to use
			 * @param address
			 *            the address of the sender
			 * @param body
			 *            the body of the message
			 * @param subject
			 *            the psuedo-subject of the message
			 * @param date
			 *            the timestamp for the message
			 * @return the URI for the new message
			 */
			public static Uri addMessage(ContentResolver resolver, String address, String body, String subject,
					Long date) {
				return addMessageToUri(resolver, CONTENT_URI, address, body, subject, date, true, false);
			}

			/**
			 * Save over an existing draft message.
			 * 
			 * @param resolver
			 *            the content resolver to use
			 * @param uri
			 *            of existing message
			 * @param body
			 *            the new body for the draft message
			 * @return true is successful, false otherwise
			 */
			public static boolean saveMessage(ContentResolver resolver, Uri uri, String body) {
				ContentValues values = new ContentValues(2);
				values.put(BODY, body);
				values.put(DATE, System.currentTimeMillis());
				return resolver.update(uri, values, null, null) == 1;
			}
		}

		/**
		 * Contains all pending outgoing text based SMS messages.
		 */
		public static final class Outbox implements BaseColumns, TextBasedSmsColumns {
			/**
			 * The content:// style URL for this table
			 */
			public static final Uri CONTENT_URI = Uri.parse("content://sms/outbox");

			/**
			 * The default sort order for this table
			 */
			public static final String DEFAULT_SORT_ORDER = "date DESC";

			/**
			 * Add an SMS to the Out box.
			 * 
			 * @param resolver
			 *            the content resolver to use
			 * @param address
			 *            the address of the sender
			 * @param body
			 *            the body of the message
			 * @param subject
			 *            the psuedo-subject of the message
			 * @param date
			 *            the timestamp for the message
			 * @param deliveryReport
			 *            whether a delivery report was requested for the
			 *            message
			 * @return the URI for the new message
			 */
			public static Uri addMessage(ContentResolver resolver, String address, String body, String subject,
					Long date, boolean deliveryReport, long threadId) {
				return addMessageToUri(resolver, CONTENT_URI, address, body, subject, date, true, deliveryReport,
						threadId);
			}
		}

		/**
		 * Contains all sent text-based SMS messages in the SMS app's.
		 */
		public static final class Conversations implements BaseColumns, TextBasedSmsColumns {
			/**
			 * The content:// style URL for this table
			 */
			public static final Uri CONTENT_URI = Uri.parse("content://sms/conversations");

			/**
			 * The default sort order for this table
			 */
			public static final String DEFAULT_SORT_ORDER = "date DESC";

			/**
			 * The first 45 characters of the body of the message
			 * <P>
			 * Type: TEXT
			 * </P>
			 */
			public static final String SNIPPET = "snippet";

			/**
			 * The number of messages in the conversation
			 * <P>
			 * Type: INTEGER
			 * </P>
			 */
			public static final String MESSAGE_COUNT = "msg_count";
		}

		/**
		 * Contains info about SMS related Intents that are broadcast.
		 */
		public static final class Intents {
			/**
			 * Set by BroadcastReceiver. Indicates the message was handled
			 * successfully.
			 */
			public static final int RESULT_SMS_HANDLED = 1;

			/**
			 * Set by BroadcastReceiver. Indicates a generic error while
			 * processing the message.
			 */
			public static final int RESULT_SMS_GENERIC_ERROR = 2;

			/**
			 * Set by BroadcastReceiver. Indicates insufficient memory to store
			 * the message.
			 */
			public static final int RESULT_SMS_OUT_OF_MEMORY = 3;

			/**
			 * Set by BroadcastReceiver. Indicates the message, while possibly
			 * valid, is of a format or encoding that is not supported.
			 */
			public static final int RESULT_SMS_UNSUPPORTED = 4;

			/**
			 * Broadcast Action: A new text based SMS message has been received
			 * by the device. The intent will have the following extra
			 * values:</p>
			 * 
			 * <ul>
			 * <li><em>pdus</em> - An Object[] od byte[]s containing the PDUs
			 * that make up the message.</li>
			 * </ul>
			 * 
			 * <p>
			 * The extra values can be extracted using
			 * {@link #getMessagesFromIntent(Intent)}.
			 * </p>
			 * 
			 * <p>
			 * If a BroadcastReceiver encounters an error while processing this
			 * intent it should set the result code appropriately.
			 * </p>
			 */
			public static final String SMS_RECEIVED_ACTION = "android.provider.Telephony.SMS_RECEIVED";

			/**
			 * Broadcast Action: A new data based SMS message has been received
			 * by the device. The intent will have the following extra
			 * values:</p>
			 * 
			 * <ul>
			 * <li><em>pdus</em> - An Object[] od byte[]s containing the PDUs
			 * that make up the message.</li>
			 * </ul>
			 * 
			 * <p>
			 * The extra values can be extracted using
			 * {@link #getMessagesFromIntent(Intent)}.
			 * </p>
			 * 
			 * <p>
			 * If a BroadcastReceiver encounters an error while processing this
			 * intent it should set the result code appropriately.
			 * </p>
			 */
			public static final String DATA_SMS_RECEIVED_ACTION = "android.intent.action.DATA_SMS_RECEIVED";

			/**
			 * Broadcast Action: A new WAP PUSH message has been received by the
			 * device. The intent will have the following extra values:</p>
			 * 
			 * <ul>
			 * <li><em>transactionId (Integer)</em> - The WAP transaction ID</li>
			 * <li><em>pduType (Integer)</em> - The WAP PDU type</li>
			 * <li><em>data</em> - The data payload of the message</li>
			 * </ul>
			 * 
			 * <p>
			 * If a BroadcastReceiver encounters an error while processing this
			 * intent it should set the result code appropriately.
			 * </p>
			 */
			public static final String WAP_PUSH_RECEIVED_ACTION = "android.provider.Telephony.WAP_PUSH_RECEIVED";

			/**
			 * Broadcast Action: The SIM storage for SMS messages is full. If
			 * space is not freed, messages targeted for the SIM (class 2) may
			 * not be saved.
			 */
			public static final String SIM_FULL_ACTION = "android.provider.Telephony.SIM_FULL";

			/**
			 * Broadcast Action: An incoming SMS has been rejected by the
			 * telephony framework. This intent is sent in lieu of any of the
			 * RECEIVED_ACTION intents. The intent will have the following extra
			 * value:</p>
			 * 
			 * <ul>
			 * <li><em>result</em> - An int result code, eg,
			 * <code>{@link #RESULT_SMS_OUT_OF_MEMORY}</code>, indicating the
			 * error returned to the network.</li>
			 * </ul>
			 */
			public static final String SMS_REJECTED_ACTION = "android.provider.Telephony.SMS_REJECTED";

			/**
			 * Read the PDUs out of an {@link #SMS_RECEIVED_ACTION} or a
			 * {@link #DATA_SMS_RECEIVED_ACTION} intent.
			 * 
			 * @param intent
			 *            the intent to read from
			 * @return an array of SmsMessages for the PDUs
			 */
			public static final SmsMessage[] getMessagesFromIntent(Intent intent) {
				Object[] messages = (Object[]) intent.getSerializableExtra("pdus");
				byte[][] pduObjs = new byte[messages.length][];

				for (int i = 0; i < messages.length; i++) {
					pduObjs[i] = (byte[]) messages[i];
				}
				byte[][] pdus = new byte[pduObjs.length][];
				int pduCount = pdus.length;
				SmsMessage[] msgs = new SmsMessage[pduCount];
				for (int i = 0; i < pduCount; i++) {
					pdus[i] = pduObjs[i];
					msgs[i] = SmsMessage.createFromPdu(pdus[i]);
				}
				return msgs;
			}
		}
	}

	/**
	 * Base columns for tables that contain MMSs.
	 */
	public interface BaseMmsColumns extends BaseColumns {

		public static final int MESSAGE_BOX_ALL = 0;
		public static final int MESSAGE_BOX_INBOX = 1;
		public static final int MESSAGE_BOX_SENT = 2;
		public static final int MESSAGE_BOX_DRAFTS = 3;
		public static final int MESSAGE_BOX_OUTBOX = 4;

		/**
		 * The date the message was sent.
		 * <P>
		 * Type: INTEGER (long)
		 * </P>
		 */
		public static final String DATE = "date";

		/**
		 * The box which the message belong to, for example, MESSAGE_BOX_INBOX.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String MESSAGE_BOX = "msg_box";

		/**
		 * Has the message been read.
		 * <P>
		 * Type: INTEGER (boolean)
		 * </P>
		 */
		public static final String READ = "read";

		/**
		 * The Message-ID of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String MESSAGE_ID = "m_id";

		/**
		 * The subject of the message, if present.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String SUBJECT = "sub";

		/**
		 * The character set of the subject, if present.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String SUBJECT_CHARSET = "sub_cs";

		/**
		 * The Content-Type of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String CONTENT_TYPE = "ct_t";

		/**
		 * The Content-Location of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String CONTENT_LOCATION = "ct_l";

		/**
		 * The address of the sender.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String FROM = "from";

		/**
		 * The address of the recipients.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String TO = "to";

		/**
		 * The address of the cc. recipients.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String CC = "cc";

		/**
		 * The address of the bcc. recipients.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String BCC = "bcc";

		/**
		 * The expiry time of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String EXPIRY = "exp";

		/**
		 * The class of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String MESSAGE_CLASS = "m_cls";

		/**
		 * The type of the message defined by MMS spec.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String MESSAGE_TYPE = "m_type";

		/**
		 * The version of specification that this message conform.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String MMS_VERSION = "v";

		/**
		 * The size of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String MESSAGE_SIZE = "m_size";

		/**
		 * The priority of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String PRIORITY = "pri";

		/**
		 * The read-report of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String READ_REPORT = "rr";

		/**
		 * Whether the report is allowed.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String REPORT_ALLOWED = "rpt_a";

		/**
		 * The response-status of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String RESPONSE_STATUS = "resp_st";

		/**
		 * The status of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String STATUS = "st";

		/**
		 * The transaction-id of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String TRANSACTION_ID = "tr_id";

		/**
		 * The retrieve-status of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String RETRIEVE_STATUS = "retr_st";

		/**
		 * The retrieve-text of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String RETRIEVE_TEXT = "retr_txt";

		/**
		 * The character set of the retrieve-text.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String RETRIEVE_TEXT_CHARSET = "retr_txt_cs";

		/**
		 * The read-status of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String READ_STATUS = "read_status";

		/**
		 * The content-class of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String CONTENT_CLASS = "ct_cls";

		/**
		 * The delivery-report of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String DELIVERY_REPORT = "d_rpt";

		/**
		 * The delivery-time-token of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String DELIVERY_TIME_TOKEN = "d_tm_tok";

		/**
		 * The delivery-time of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String DELIVERY_TIME = "d_tm";

		/**
		 * The response-text of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String RESPONSE_TEXT = "resp_txt";

		/**
		 * The sender-visibility of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String SENDER_VISIBILITY = "s_vis";

		/**
		 * The reply-charging of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String REPLY_CHARGING = "r_chg";

		/**
		 * The reply-charging-deadline-token of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String REPLY_CHARGING_DEADLINE_TOKEN = "r_chg_dl_tok";

		/**
		 * The reply-charging-deadline of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String REPLY_CHARGING_DEADLINE = "r_chg_dl";

		/**
		 * The reply-charging-id of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String REPLY_CHARGING_ID = "r_chg_id";

		/**
		 * The reply-charging-size of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String REPLY_CHARGING_SIZE = "r_chg_sz";

		/**
		 * The previously-sent-by of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String PREVIOUSLY_SENT_BY = "p_s_by";

		/**
		 * The previously-sent-date of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String PREVIOUSLY_SENT_DATE = "p_s_d";

		/**
		 * The store of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String STORE = "store";

		/**
		 * The mm-state of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String MM_STATE = "mm_st";

		/**
		 * The mm-flags-token of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String MM_FLAGS_TOKEN = "mm_flg_tok";

		/**
		 * The mm-flags of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String MM_FLAGS = "mm_flg";

		/**
		 * The store-status of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String STORE_STATUS = "store_st";

		/**
		 * The store-status-text of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String STORE_STATUS_TEXT = "store_st_txt";

		/**
		 * The stored of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String STORED = "stored";

		/**
		 * The totals of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String TOTALS = "totals";

		/**
		 * The mbox-totals of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String MBOX_TOTALS = "mb_t";

		/**
		 * The mbox-totals-token of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String MBOX_TOTALS_TOKEN = "mb_t_tok";

		/**
		 * The quotas of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String QUOTAS = "qt";

		/**
		 * The mbox-quotas of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String MBOX_QUOTAS = "mb_qt";

		/**
		 * The mbox-quotas-token of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String MBOX_QUOTAS_TOKEN = "mb_qt_tok";

		/**
		 * The message-count of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String MESSAGE_COUNT = "m_cnt";

		/**
		 * The start of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String START = "start";

		/**
		 * The distribution-indicator of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String DISTRIBUTION_INDICATOR = "d_ind";

		/**
		 * The element-descriptor of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String ELEMENT_DESCRIPTOR = "e_des";

		/**
		 * The limit of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String LIMIT = "limit";

		/**
		 * The recommended-retrieval-mode of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String RECOMMENDED_RETRIEVAL_MODE = "r_r_mod";

		/**
		 * The recommended-retrieval-mode-text of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String RECOMMENDED_RETRIEVAL_MODE_TEXT = "r_r_mod_txt";

		/**
		 * The status-text of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String STATUS_TEXT = "st_txt";

		/**
		 * The applic-id of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String APPLIC_ID = "apl_id";

		/**
		 * The reply-applic-id of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String REPLY_APPLIC_ID = "r_apl_id";

		/**
		 * The aux-applic-id of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String AUX_APPLIC_ID = "aux_apl_id";

		/**
		 * The drm-content of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String DRM_CONTENT = "drm_c";

		/**
		 * The adaptation-allowed of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String ADAPTATION_ALLOWED = "adp_a";

		/**
		 * The replace-id of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String REPLACE_ID = "repl_id";

		/**
		 * The cancel-id of the message.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String CANCEL_ID = "cl_id";

		/**
		 * The cancel-status of the message.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String CANCEL_STATUS = "cl_st";

		/**
		 * The thread ID of the message
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String THREAD_ID = "thread_id";

		/**
		 * Has the message been locked?
		 * <P>
		 * Type: INTEGER (boolean)
		 * </P>
		 */
		public static final String LOCKED = "locked";
	}

	/**
	 * Columns for the "canonical_addresses" table used by MMS and SMS."
	 */
	public interface CanonicalAddressesColumns extends BaseColumns {
		/**
		 * An address used in MMS or SMS. Email addresses are converted to lower
		 * case and are compared by string equality. Other addresses are
		 * compared using PHONE_NUMBERS_EQUAL.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String ADDRESS = "address";
	}

	/**
	 * Columns for the "threads" table used by MMS and SMS.
	 */
	public interface ThreadsColumns extends BaseColumns {
		/**
		 * The date at which the thread was created.
		 * 
		 * <P>
		 * Type: INTEGER (long)
		 * </P>
		 */
		public static final String DATE = "date";

		/**
		 * A string encoding of the recipient IDs of the recipients of the
		 * message, in numerical order and separated by spaces.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String RECIPIENT_IDS = "recipient_ids";

		/**
		 * The message count of the thread.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String MESSAGE_COUNT = "message_count";
		/**
		 * Indicates whether all messages of the thread have been read.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String READ = "read";
		/**
		 * The snippet of the latest message in the thread.
		 * <P>
		 * Type: TEXT
		 * </P>
		 */
		public static final String SNIPPET = "snippet";
		/**
		 * The charset of the snippet.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String SNIPPET_CHARSET = "snippet_cs";
		/**
		 * Type of the thread, either Threads.COMMON_THREAD or
		 * Threads.BROADCAST_THREAD.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String TYPE = "type";
		/**
		 * Indicates whether there is a transmission error in the thread.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String ERROR = "error";
		/**
		 * Indicates whether this thread contains any attachments.
		 * <P>
		 * Type: INTEGER
		 * </P>
		 */
		public static final String HAS_ATTACHMENT = "has_attachment";
	}

	/**
	 * Helper functions for the "threads" table used by MMS and SMS.
	 */
	public static final class Threads implements ThreadsColumns {
		private static final String[] ID_PROJECTION = { BaseColumns._ID };
		private static final String STANDARD_ENCODING = "UTF-8";
		private static final Uri THREAD_ID_CONTENT_URI = Uri.parse("content://mms-sms/threadID");
		public static final Uri CONTENT_URI = Uri.withAppendedPath(MmsSms.CONTENT_URI, "conversations");
		public static final Uri OBSOLETE_THREADS_URI = Uri.withAppendedPath(CONTENT_URI, "obsolete");

		public static final int COMMON_THREAD = 0;
		public static final int BROADCAST_THREAD = 1;

		// No one should construct an instance of this class.
		private Threads() {
		}

		/**
		 * This is a single-recipient version of getOrCreateThreadId. It's
		 * convenient for use with SMS messages.
		 */
		public static long getOrCreateThreadId(Context context, String recipient) {
			Set<String> recipients = new HashSet<String>();

			recipients.add(recipient);
			return getOrCreateThreadId(context, recipients);
		}

		/**
		 * Given the recipients list and subject of an unsaved message, return
		 * its thread ID. If the message starts a new thread, allocate a new
		 * thread ID. Otherwise, use the appropriate existing thread ID.
		 * 
		 * Find the thread ID of the same set of recipients (in any order,
		 * without any additions). If one is found, return it. Otherwise, return
		 * a unique thread ID.
		 */
		public static long getOrCreateThreadId(Context context, Set<String> recipients) {
			Uri.Builder uriBuilder = THREAD_ID_CONTENT_URI.buildUpon();

			for (String recipient : recipients) {
				if (Mms.isEmailAddress(recipient)) {
					recipient = Mms.extractAddrSpec(recipient);
				}

				uriBuilder.appendQueryParameter("recipient", recipient);
			}

			Uri uri = uriBuilder.build();
			if (DEBUG) {
				Log.v(TAG, "getOrCreateThreadId uri: " + uri);
			}
			Cursor cursor = SqliteWrapper.query(context, context.getContentResolver(), uri, ID_PROJECTION, null, null,
					null);
			if (DEBUG) {
				Log.v(TAG, "getOrCreateThreadId cursor cnt: " + cursor.getCount());
			}
			if (cursor != null) {
				try {
					if (cursor.moveToFirst()) {
						return cursor.getLong(0);
					} else {
						Log.e(TAG, "getOrCreateThreadId returned no rows!");
					}
				} finally {
					cursor.close();
				}
			}

			Log.e(TAG, "getOrCreateThreadId failed with uri " + uri.toString());
			throw new IllegalArgumentException("Unable to find or allocate a thread ID.");
		}
	}

	/**
	 * Contains all MMS messages.
	 */
	public static final class Mms implements BaseMmsColumns {
		/**
		 * The content:// style URL for this table
		 */
		public static final Uri CONTENT_URI = Uri.parse("content://mms");

		public static final Uri REPORT_REQUEST_URI = Uri.withAppendedPath(CONTENT_URI, "report-request");

		public static final Uri REPORT_STATUS_URI = Uri.withAppendedPath(CONTENT_URI, "report-status");

		/**
		 * The default sort order for this table
		 */
		public static final String DEFAULT_SORT_ORDER = "date DESC";

		/**
		 * mailbox = name-addr name-addr = [display-name] angle-addr angle-addr
		 * = [CFWS] "<" addr-spec ">" [CFWS]
		 */
		public static final Pattern NAME_ADDR_EMAIL_PATTERN = Pattern
				.compile("\\s*(\"[^\"]*\"|[^<>\"]+)\\s*<([^<>]+)>\\s*");

		/**
		 * quoted-string = [CFWS] DQUOTE *([FWS] qcontent) [FWS] DQUOTE [CFWS]
		 */
		public static final Pattern QUOTED_STRING_PATTERN = Pattern.compile("\\s*\"([^\"]*)\"\\s*");

		public static final Cursor query(ContentResolver cr, String[] projection) {
			return cr.query(CONTENT_URI, projection, null, null, DEFAULT_SORT_ORDER);
		}

		public static final Cursor query(ContentResolver cr, String[] projection, String where, String orderBy) {
			return cr.query(CONTENT_URI, projection, where, null, orderBy == null ? DEFAULT_SORT_ORDER : orderBy);
		}

		public static final String getMessageBoxName(int msgBox) {
			switch (msgBox) {
			case MESSAGE_BOX_ALL:
				return "all";
			case MESSAGE_BOX_INBOX:
				return "inbox";
			case MESSAGE_BOX_SENT:
				return "sent";
			case MESSAGE_BOX_DRAFTS:
				return "drafts";
			case MESSAGE_BOX_OUTBOX:
				return "outbox";
			default:
				throw new IllegalArgumentException("Invalid message box: " + msgBox);
			}
		}

		public static String extractAddrSpec(String address) {
			Matcher match = NAME_ADDR_EMAIL_PATTERN.matcher(address);

			if (match.matches()) {
				return match.group(2);
			}
			return address;
		}

		/**
		 * Returns true if the address is an email address
		 * 
		 * @param address
		 *            the input address to be tested
		 * @return true if address is an email address
		 */
		public static boolean isEmailAddress(String address) {
			if (TextUtils.isEmpty(address)) {
				return false;
			}

			String s = extractAddrSpec(address);
			Matcher match = Regex.EMAIL_ADDRESS_PATTERN.matcher(s);
			return match.matches();
		}

		/**
		 * Returns true if the number is a Phone number
		 * 
		 * @param number
		 *            the input number to be tested
		 * @return true if number is a Phone number
		 */
		public static boolean isPhoneNumber(String number) {
			if (TextUtils.isEmpty(number)) {
				return false;
			}

			Matcher match = Regex.PHONE_PATTERN.matcher(number);
			return match.matches();
		}

		/**
		 * Contains all MMS messages in the MMS app's inbox.
		 */
		public static final class Inbox implements BaseMmsColumns {
			/**
			 * The content:// style URL for this table
			 */
			public static final Uri CONTENT_URI = Uri.parse("content://mms/inbox");

			/**
			 * The default sort order for this table
			 */
			public static final String DEFAULT_SORT_ORDER = "date DESC";
		}

		/**
		 * Contains all MMS messages in the MMS app's sent box.
		 */
		public static final class Sent implements BaseMmsColumns {
			/**
			 * The content:// style URL for this table
			 */
			public static final Uri CONTENT_URI = Uri.parse("content://mms/sent");

			/**
			 * The default sort order for this table
			 */
			public static final String DEFAULT_SORT_ORDER = "date DESC";
		}

		/**
		 * Contains all MMS messages in the MMS app's drafts box.
		 */
		public static final class Draft implements BaseMmsColumns {
			/**
			 * The content:// style URL for this table
			 */
			public static final Uri CONTENT_URI = Uri.parse("content://mms/drafts");

			/**
			 * The default sort order for this table
			 */
			public static final String DEFAULT_SORT_ORDER = "date DESC";
		}

		/**
		 * Contains all MMS messages in the MMS app's outbox.
		 */
		public static final class Outbox implements BaseMmsColumns {
			/**
			 * The content:// style URL for this table
			 */
			public static final Uri CONTENT_URI = Uri.parse("content://mms/outbox");

			/**
			 * The default sort order for this table
			 */
			public static final String DEFAULT_SORT_ORDER = "date DESC";
		}

		public static final class Addr implements BaseColumns {
			/**
			 * The ID of MM which this address entry belongs to.
			 */
			public static final String MSG_ID = "msg_id";

			/**
			 * The ID of contact entry in Phone Book.
			 */
			public static final String CONTACT_ID = "contact_id";

			/**
			 * The address text.
			 */
			public static final String ADDRESS = "address";

			/**
			 * Type of address, must be one of PduHeaders.BCC, PduHeaders.CC,
			 * PduHeaders.FROM, PduHeaders.TO.
			 */
			public static final String TYPE = "type";

			/**
			 * Character set of this entry.
			 */
			public static final String CHARSET = "charset";
		}

		public static final class Part implements BaseColumns {
			/**
			 * The identifier of the message which this part belongs to.
			 * <P>
			 * Type: INTEGER
			 * </P>
			 */
			public static final String MSG_ID = "mid";

			/**
			 * The order of the part.
			 * <P>
			 * Type: INTEGER
			 * </P>
			 */
			public static final String SEQ = "seq";

			/**
			 * The content type of the part.
			 * <P>
			 * Type: TEXT
			 * </P>
			 */
			public static final String CONTENT_TYPE = "ct";

			/**
			 * The name of the part.
			 * <P>
			 * Type: TEXT
			 * </P>
			 */
			public static final String NAME = "name";

			/**
			 * The charset of the part.
			 * <P>
			 * Type: TEXT
			 * </P>
			 */
			public static final String CHARSET = "chset";

			/**
			 * The file name of the part.
			 * <P>
			 * Type: TEXT
			 * </P>
			 */
			public static final String FILENAME = "fn";

			/**
			 * The content disposition of the part.
			 * <P>
			 * Type: TEXT
			 * </P>
			 */
			public static final String CONTENT_DISPOSITION = "cd";

			/**
			 * The content ID of the part.
			 * <P>
			 * Type: INTEGER
			 * </P>
			 */
			public static final String CONTENT_ID = "cid";

			/**
			 * The content location of the part.
			 * <P>
			 * Type: INTEGER
			 * </P>
			 */
			public static final String CONTENT_LOCATION = "cl";

			/**
			 * The start of content-type of the message.
			 * <P>
			 * Type: INTEGER
			 * </P>
			 */
			public static final String CT_START = "ctt_s";

			/**
			 * The type of content-type of the message.
			 * <P>
			 * Type: TEXT
			 * </P>
			 */
			public static final String CT_TYPE = "ctt_t";

			/**
			 * The location(on filesystem) of the binary data of the part.
			 * <P>
			 * Type: INTEGER
			 * </P>
			 */
			public static final String _DATA = "_data";

			public static final String TEXT = "text";

		}

		public static final class Rate {
			public static final Uri CONTENT_URI = Uri.withAppendedPath(Mms.CONTENT_URI, "rate");
			/**
			 * When a message was successfully sent.
			 * <P>
			 * Type: INTEGER
			 * </P>
			 */
			public static final String SENT_TIME = "sent_time";
		}

		public static final class ScrapSpace {
			/**
			 * The content:// style URL for this table
			 */
			public static final Uri CONTENT_URI = Uri.parse("content://mms/scrapSpace");

			/**
			 * This is the scrap file we use to store the media attachment when
			 * the user chooses to capture a photo to be attached . We pass
			 * {#link@Uri} to the Camera app, which streams the captured image
			 * to the uri. Internally we write the media content to this file.
			 * It's named '.temp.jpg' so Gallery won't pick it up.
			 */
			public static final String SCRAP_FILE_PATH = "/sdcard/mms/scrapSpace/.temp.jpg";
		}

		public static final class Intents {
			private Intents() {
				// Non-instantiatable.
			}

			/**
			 * The extra field to store the contents of the Intent, which should
			 * be an array of Uri.
			 */
			public static final String EXTRA_CONTENTS = "contents";
			/**
			 * The extra field to store the type of the contents, which should
			 * be an array of String.
			 */
			public static final String EXTRA_TYPES = "types";
			/**
			 * The extra field to store the 'Cc' addresses.
			 */
			public static final String EXTRA_CC = "cc";
			/**
			 * The extra field to store the 'Bcc' addresses;
			 */
			public static final String EXTRA_BCC = "bcc";
			/**
			 * The extra field to store the 'Subject'.
			 */
			public static final String EXTRA_SUBJECT = "subject";
			/**
			 * Indicates that the contents of specified URIs were changed. The
			 * application which is showing or caching these contents should be
			 * updated.
			 */
			public static final String CONTENT_CHANGED_ACTION = "android.intent.action.CONTENT_CHANGED";
			/**
			 * An extra field which stores the URI of deleted contents.
			 */
			public static final String DELETED_CONTENTS = "deleted_contents";
		}
	}

	/**
	 * Contains all MMS and SMS messages.
	 */
	public static final class MmsSms implements BaseColumns {
		/**
		 * The column to distinguish SMS &amp; MMS messages in query results.
		 */
		public static final String TYPE_DISCRIMINATOR_COLUMN = "transport_type";

		public static final Uri CONTENT_URI = Uri.parse("content://mms-sms/");

		public static final Uri CONTENT_CONVERSATIONS_URI = Uri.parse("content://mms-sms/conversations");

		public static final Uri CONTENT_FILTER_BYPHONE_URI = Uri.parse("content://mms-sms/messages/byphone");

		public static final Uri CONTENT_UNDELIVERED_URI = Uri.parse("content://mms-sms/undelivered");

		public static final Uri CONTENT_DRAFT_URI = Uri.parse("content://mms-sms/draft");

		public static final Uri CONTENT_LOCKED_URI = Uri.parse("content://mms-sms/locked");

		/***
		 * Pass in a query parameter called "pattern" which is the text to
		 * search for. The sort order is fixed to be thread_id ASC,date DESC.
		 */
		public static final Uri SEARCH_URI = Uri.parse("content://mms-sms/search");

		// Constants for message protocol types.
		public static final int SMS_PROTO = 0;
		public static final int MMS_PROTO = 1;

		// Constants for error types of pending messages.
		public static final int NO_ERROR = 0;
		public static final int ERR_TYPE_GENERIC = 1;
		public static final int ERR_TYPE_SMS_PROTO_TRANSIENT = 2;
		public static final int ERR_TYPE_MMS_PROTO_TRANSIENT = 3;
		public static final int ERR_TYPE_TRANSPORT_FAILURE = 4;
		public static final int ERR_TYPE_GENERIC_PERMANENT = 10;
		public static final int ERR_TYPE_SMS_PROTO_PERMANENT = 11;
		public static final int ERR_TYPE_MMS_PROTO_PERMANENT = 12;

		public static final class PendingMessages implements BaseColumns {
			public static final Uri CONTENT_URI = Uri.withAppendedPath(MmsSms.CONTENT_URI, "pending");
			/**
			 * The type of transport protocol(MMS or SMS).
			 * <P>
			 * Type: INTEGER
			 * </P>
			 */
			public static final String PROTO_TYPE = "proto_type";
			/**
			 * The ID of the message to be sent or downloaded.
			 * <P>
			 * Type: INTEGER
			 * </P>
			 */
			public static final String MSG_ID = "msg_id";
			/**
			 * The type of the message to be sent or downloaded. This field is
			 * only valid for MM. For SM, its value is always set to 0.
			 */
			public static final String MSG_TYPE = "msg_type";
			/**
			 * The type of the error code.
			 * <P>
			 * Type: INTEGER
			 * </P>
			 */
			public static final String ERROR_TYPE = "err_type";
			/**
			 * The error code of sending/retrieving process.
			 * <P>
			 * Type: INTEGER
			 * </P>
			 */
			public static final String ERROR_CODE = "err_code";
			/**
			 * How many times we tried to send or download the message.
			 * <P>
			 * Type: INTEGER
			 * </P>
			 */
			public static final String RETRY_INDEX = "retry_index";
			/**
			 * The time to do next retry.
			 */
			public static final String DUE_TIME = "due_time";
			/**
			 * The time we last tried to send or download the message.
			 */
			public static final String LAST_TRY = "last_try";
		}
	}

	public static final class Carriers implements BaseColumns {
		/**
		 * The content:// style URL for this table
		 */
		public static final Uri CONTENT_URI = Uri.parse("content://telephony/carriers");

		/**
		 * The default sort order for this table
		 */
		public static final String DEFAULT_SORT_ORDER = "name ASC";

		public static final String NAME = "name";

		public static final String APN = "apn";

		public static final String PROXY = "proxy";

		public static final String PORT = "port";

		public static final String MMSPROXY = "mmsproxy";

		public static final String MMSPORT = "mmsport";

		public static final String SERVER = "server";

		public static final String USER = "user";

		public static final String PASSWORD = "password";

		public static final String MMSC = "mmsc";

		public static final String MCC = "mcc";

		public static final String MNC = "mnc";

		public static final String NUMERIC = "numeric";

		public static final String TYPE = "type";

		public static final String CURRENT = "current";
	}

	public static final class Intents {
		private Intents() {
			// Not instantiable
		}

		/**
		 * Broadcast Action: A "secret code" has been entered in the dialer.
		 * Secret codes are of the form *#*#
		 * <code>#*#*. The intent will have the data URI:</p>
		 * 
		 * <p><code>android_secret_code://&lt;code&gt;</code></p>
		 */
		public static final String SECRET_CODE_ACTION = "android.provider.Telephony.SECRET_CODE";

		/**
		 * Broadcast Action: The Service Provider string(s) have been updated.
		 * Activities or services that use these strings should update their
		 * display. The intent will have the following extra values:</p>
		 * <ul>
		 * <li><em>showPlmn</em> - Boolean that indicates whether the PLMN
		 * should be shown.</li>
		 * <li><em>plmn</em> - The operator name of the registered network, as a
		 * string.</li>
		 * <li><em>showSpn</em> - Boolean that indicates whether the SPN should
		 * be shown.</li>
		 * <li><em>spn</em> - The service provider name, as a string.</li>
		 * </ul>
		 * Note that <em>showPlmn</em> may indicate that <em>plmn</em> should be
		 * displayed, even though the value for <em>plmn</em> is null. This can
		 * happen, for example, if the phone has not registered to a network
		 * yet. In this case the receiver may substitute an appropriate
		 * placeholder string (eg, "No service").
		 * 
		 * It is recommended to display <em>plmn</em> before / above
		 * <em>spn</em> if both are displayed.
		 * 
		 * <p>
		 * Note this is a protected intent that can only be sent by the system.
		 */
		public static final String SPN_STRINGS_UPDATED_ACTION = "android.provider.Telephony.SPN_STRINGS_UPDATED";

		public static final String EXTRA_SHOW_PLMN = "showPlmn";
		public static final String EXTRA_PLMN = "plmn";
		public static final String EXTRA_SHOW_SPN = "showSpn";
		public static final String EXTRA_SPN = "spn";
	}
}
